Apparatus for administering anesthetics.



No. 883,987. PATENT@ APR. '1, 1908.

Y c: Ki' WEER.

APPARATUS ma ADMINISTBBING ANBSTHETIGS. APPLIOTION FILBD. DEQ, 10.1906.

4 SHEETS-SHEET vlA PATENTE@ APB. 190s.

' l c. K. TETER.

APPARATUS FOR ADMIMSTERING ANESTHBTIGS-- .APPLICATION FILED DEU. 10,1906.

4 SHEETS-SHEBT 2.

PATBNTED APE. 7, 1908.

0. K. TETBR. APPARATUS FDR ADM NISTERING ANESTHETIG", Non FILED )320.10.1905.

APPLICA UNITED STATES PATENT OFFICE.

CHARLES K. TETER, OF CLEVELAD, OHIO, ASSIGNOR ONE-HALF TO FRANK M. GASTO,

' OF CLEVELAND, OHIO.

APPARATS FOR ADMINISTERING ANESTHETICS.

'Specification of Letters Patent.

Patented April 7, 190s.

Application filed December 10, 1906. Serial No. 347,027.

To all 'whom 'it may concern:

Be it known that l, CHARLES K. TETER, a

citizen of the United States, residing at (lleveland, in the county of Cuyahoga. and State of Ohio, have invented acertain new and useful Improvement in Apparatus for Administerin Anesthetics, of which the following is a fu ll, clear, and exact description, reference being had to the accompanying drawings.

`My' inventionrelates to an apparatus for administerin anesthetics and has for its object to provi e a self-contained apparatus of which shall be supplied through flexible 're-v ceptacles to provide means' whereby the anesthetic may be warmed before inhalation; to' provide means for muflling the sound produced 'by thev assage of the `anesthetic gas through the va ves on its Way to the mixing chamber; to provide means whereby several kinds of anesthetics may be employed with the same apparatus; and generally to simplify and improve the construction and efficiency of apparatus of this character, Referring to the drawings, `Figure 1 represents a perspective view of an apparatus constructed in accordance with my invention. Fig. 2 represents an enlarged plan view of the apparatus disclosed in Fig. 1. Fig. 3 represents a sectional view taken on the line 3 3 of Fig. 2.. Fig. 4 represents a sectional View taken on line4-4 of Fig. 2. F i. 5 represents a perspective detail of the valve which controls the flow of oxygen into the mixingr chamber. Fig. 6 represents a sectional detail on the linel 6-6 of Fig-5.

4 Fig. 7 represents a sectional detail on line 747 of Fig. 2; and Fig. 8 represents a sectional detail taken on the line. 88 otFig. 7.

'lhe apparatus comprises generally a suporting base, said base consistingof 'a tubuar standard or uprightl, supported by the foldable legsZ. 'lhcse legs are hinged toa collar 3 on the base of the standard.

4 denotes a collar slidable on standard 1 and provided with a set screw A5 for securing.

the same in any desired `position o ii `said standard. This collar has hinged thereto a series of links 6, onefor each leg. '.llie lower end of each link is pivotally connected to an intermediate portion of a leg 2, and the lower end of each of said links 6 is offset from the u7 per portion thereof to permit the legs to e olded u into contact with the standard as well as dbwnwardhJ into the position shown in the drawing, without obstruction by said links.

7 denotes a rod or standard which is slidably mounted within the hollow standard 1 and is connected at its upper end to an extension 8 projecting downwardly from the mixing chamber 9. 'i his mixing cham-ber is provided with hollow arms 10, 10a extending from opposite sides thereof and communicat- Iing therewith. Each of these arms is fitted into the mixing chamber, preferably by being threadedthereinto, and each of said arms is provided with an extension projcctinginto the body of the mixing chamber. outer end, each of the arms V10, 10ais providedl with a transverse arm 11 having atr each end thereof a collar or yoke 12 for 'the' reception oftheneck 13 of a gas tank or "cylinder 14. Each arm 11 is provided Wi'th'aI bore l5 extending longitudinally thereof `fromA one collar to the other and is provided with a valve 16 at the central portion thereof and controlling the ilow of as from the bore 15 into a downwardly inclined bore 17, 17'a provided respectively in the arms 10, 10,l

As Will appear more particularly froin'Fig. 8, the valve 16 is a three-way valve, enabling either or both branches of passageway, 15 to be placed into and out of communication with passageway 17 or 17u; 'At each end of bore 15 is a nipple 18 by which communica- 'tion is established between the lateral port extending through the neck ofthe cylinder 14 and bore 15.L Each of said cylinders is provided with the ordinary valve 19 and removable operating liandlc or key 20. Alse't Screw 21 is provided for each 'of the collars or neck-s i12 for the. purpose of clamping.' the neck of the gas cylinder with its lateral bore in operative relation to the nipplel.

The inclined passageu'ays 17 17d ciniiiu-v nicate with downwardly extending threaded necks 21, 2ld respectively, and to each of said necks is connected a bag '22, 22a `of rubber or similar material. The bags are preferably connected to fthe necks 21 by being` threaded onto sleevcsi, 23a, which in turn arc threaded onto the lower ends-of necks 21,

21a', respectively. lheloiven end of passage- A way 17 is roamedoiiti'oi' the accommodation oil a tubular connection 24, and to .the lower y gas be cooled. B admitting the c ooledegas to with end of such connection there is fitte'd a tube of rubber or similar flexible material 25 which extends downwardly into the bag 22 to the bottom thereof, for a purpose to 5 hereinafter described.

The neck 23 is provided with a. lateral valved branch or connection 26, by means of which a large tank of anesthetic as, as nitrous oxid,`may be connected to le mixing chambe cylinders 14. v

27, 27 denote valves interposed between assagewa i'he tubulayi-s connections which project into 1'5 the chamber. The valve 27 is of an ordinary type of holldw rotary valve having a port 28 in the 'c lindrical wall thereof communicating wit the' tubular connection 29 which is threaded into the chamber. The inner end of said connection is provided with a check valve, which mais)7 be conveniently formed by means of a thim le 30, which is threaded onto the inner end of 29 and is rovided with a series of ope 31, and aA k 32 loosely mounted 1n sai thimble, seats being provided for said disk by the inner end of 2 9 and the inner end of thimble 30. e employment of connection 24 'and tube 25 is particularly useful inconnection with the use of nitrous oXid or similar gaseous or volatile anesthetics. By extending the lower end of tube 25 to about the bottom of bag 22, the noise incident to the-escape of the nitrous oxid through the lbore and passageway 1'7 is muiiied. Moreover, the oxld is discharged at the bottom of the bag and haarto riseto the top thereof before passing into the mixing chamber, min- 4o gling in its course with the gas that is already contained therein; As is Well known, the 't expansion of the nitrous oxid from the lgiiielid to the gaseous condition when it is' liberated from the cylinder causes the to the bottom o the bag 22, it is mix the gas which has been standing in said bag and which has been sub'ected to the temperature of the room, an

ted to the bagis warmed before being inhaled by the patient. For the b 22,

whichreceives oxygen from the cyhnders 14, the employment of connection 24 and tube 25 is unnecessary.l It is desirable 55. however, to admit the o -gen to the mixing chamber in certain d `te proportions.

For this p ose, I construct the valve 27* as follows: e valve is rovided with a large port 33 of substantially the diameter ofthe connection 39% Merging with and ex I dinglaterally from saidport is a slit 3 4 (see 3, 5, and 6), the length of said sht substantially equal to the'ividth ofthe A I rinletmto the colnection29. The upper'aml.` integrally with tho 6 5 of valve 27" is formcd r without the employment of the` 17, 17a and bags 22, 22l andv the gas so admit- 38 denotes a sp extsading vertically of 75 the valve 'cas' an adapted to engage the notches in h 37 and to -form therewith a stop and indicator. By turning the valve 27 the amount of oxygen being supplied to the mixing chamber may be regulated and the proportionof oxygen so admitted may be determined by an inspection of the indicator; W'hen the valve is turned so that the numeral 10 is in conjunction with-spring 38, the full capacity of theslit 34 is supplied to the mlxingrchamber. Should it be esirable or necessary for any reason to increase this amount, the valve 'may be turned to br` the port `33 inregister with connection 29. The connection 29* projects into the mixing chamber in the same manner as does connection 29 but is provided with a more sensitive form of check valve. The check valve in this case comprises a disk 39 adapted to seat on the inner end of connection 29 and rovided with a stem 40 extending throng a spider 41 within the connection. The end of stem 40 opposite the disk 39 is provided with Va nut 42, and aspring 43is'interposed between said nut and the adjacent rtion of. 10Q' spider 41. It will be evident that y adjust# ing the nut 42', the tension of sp 43 may be varied to suit the requirements vof the particular case.'

To adalpt my apparatus for the administering of et er, either alone or combined with o en,Iprovide the chamber-9 with axtlriular connection 44 with means for supplying ether vapor through said connection. The inner end of .the connection comprises a sleeve 45 threaded into the `mixing chamber 9 and provided with a check valve 46, similar to valve 39. The connection 44 is provided with an elbow 47, the upper branch of which supports a va rizing cham- 115 ber 48, whiehis'sllpplied wit ether from a receptacle 49 having a valve 50 and a sight opening 51 adjacent the lower end. of the valve. The upper branch of elbow 47 projects into a vaporizing eceptacle 48 and is there provided with a wire cage 52 for the purpose of preventing the gauze 53 in said chamber from obstructing the inlet to the up r branch of elbow 47.' There is provideed in the connecton'54 between rece tacles 48 and 49 an opening for the as: mission of air to mingle with the ether vapor linehambert.

Prog'ecang from mesme uf une mixing wie@ www 4 4 m1 i which is provided with a flexible tube nection whereby chloroformmaybe supplied, preferably mingled with the oxygen and nitrous oxid from the mixing chamber. 'lhis connection comprises a tee 56 threaded onto a nipple 57 projecting from the mixing chamber. Opposite ends of said tee are provided with connections 58 and 5t), the former of which coiiimunicates with a receptacle 6U containing chloroform and the latter of 6l leading ollI to an inhaler. rl`he connection 58 is provided with a branched pipe communieatingl therewith, one of the branches 62 having a valve 63 and a downturned ciid projecting through the cover of therece tacle 60 and into the body of said receptac e. The other branch 6l is olsct from 62 and communicates with 62 intermediate of the valve 63 and connection 58. The branch 64 has a downward extension 65 which projects slightly thriiugh the cover of the receptacle 60, and said branch is provided with a valvev 66. 'lhe end of branch 64 is provided with a flexible tube 67 whereby either chloroform alone may be supplied to the mouth of the patient, through instrument 67 when it is desired to operate on the mouth, or` cliloroform mingled with the iu the mixing chamber may be so supplied. 'llie tee is provided with a valve 68, by means of which air may be forced to ilow through either of the branches 62 or 64 into the receptacle 60, instead of the gases from the mixing chaniber, if this should be so desired.

By means of the-chloroform receptacle 60 and the connections therewith, chloroform .maybeadded to the mixture of nitrous oxid and oxygen llowingthrough the tube 6l iii certain cases where this may be. required. 'l`he chloroform may be conveniently added iby connecting the tube 67 to the inhaler. By

opening the valve 63, part ol' the mixture of nitrous oxid and oxygen which enters the tee 56 will through pipe 62 and the downward extension thereoll into the chloroform receptacle 6U, and will there be charged with vapors of chloroform and the mixture thus produced will be conducted through connection 65 and tube 67 to thc point of use. By opening the valve 66, the mixture of nitrous )xid and oxygen which passes through the connection :')N'is divided, only about half of the same passing into the. chloroform rcceptaclc. 'lhe result is to proportionatcly reduce the amount of chloroform supplied through tube 67. liy proper manipulation of valv'es 63 and 66, the proportion ol' chloroform supplied through tube 67 may be varied to suit the.requirements of the case. By leading tube 67 to the inhaler 61 on tube 6l, as indicated by dotted lines., Fig, 1, this mixture of chloroform, nitrous oxid aml oxygen may be mingled with the mixture of the latter two gasels flow ing through the tube 61.

"lhe interposition of the flexible bags between the gas cylinders andthe mixing chamber enables the gases to be mixed in accordance with the symptoms of the patient and the exigent-ies ot' the operation. By keeping the oxygen bag and the nitrous oxid bag at about the same distention (through the -manipulation ol` the valves 19) the two gases are tial v even ressure, and the proportions of said gases i elivered unto the mixing chamber may be accurately regulated by valves 27, 27a. Furthermore the pressure exerted by the elastic walls of said bags on the gases contained therein assists the respiration of the patient by relieving the respiratory muscles from stress whether only nitrous oxid and oxygen be used alone or in combination with another anesthetic. At the same time, the .bags permit the use of a small mixing chamber, contributing to the eompactness and portability of the apparatus.

'It will be apparent, from the foregoing ldescription taken with the drawings, that I have produced a complete, self-contained, and portable apparatus whereby various anesthetics may be conveniently and scientifically administered, either alone or conjointly with oxygen and other anestheties, and one that is free from the objectionable features of other apparatus of this character with which I am acquainted.

Important features of my invention are the adaptability of the same for the administration of various kinds .of anesthetics; the elmployment of a mixing chamber in conjunction with the disteiisible bags;the inuffling of the noise of the ex anded nitrous oxid; the provision of means or warming the same prior to administration; means for mingling the oxygen with the anesthetic in definite iroportions; the arrangement of parts whereliy ether or chloroform may be administered through the same apparatus by which the nitrous oxid and oxygen are-su plied; and the provision of a complete, se f-oontained apparatus whereby the' administration of various anesthotics may be scientifically accomplisl'ied.

Having described my invention, I claim:

l, ln an apparatus for administering anesthetics, the combination of a chamber, a tubular arm projecting from and communicating therewith', said arm having intermediate the ends thereof a downwardly'projecting branch, `a flexible bag r receptacle carrie( by said branch, a yoke r su port for Aan anesthetic cylinder carl icd by t e outer portion of said arm, a passageway extending from supplied to valves 27 and 27a' at substansaid yoke or support into the downward ex l tension of said arm, a tube extending from said branch to the lower por-tion of the flexible bag, and an outlet from said chamber. u 2. In an apparatus for adiministeringl anesthetics, the combination of a chamber, a tubular arm projecting from and communicat- 4 cease? I ing therewith, said arm having intermediate' and' said chamber, means for ceptacle sup rted to travel substantially the the ends thereof a downwardly'projecting branch, a flexible bag orv receptacle carried by said branch, a vyoke or-sup ort for an anesthetic cylinder carried by tlhe outer portion of said arm, a downwardly extending passageway leading from said yoke or support into the downward extension of said arm, a

flexible tube extending from said branch to the lower(V portion of the flexible bag, and an outlet from said chamber.

3. In an apparatus for administering anesthetics, the combination of a chamber, a cylinder or receptacle for anesthetics, a duct extendine between said cylinder or receptacle -an said chamber, a flexible, bag interposed between said' cylinder or receptacle and said chamber, means for admitting the anesthetic supplied from the cylinder or receptacle t0 the bottom of the bag, and an outlet from said chamber.

4. In an apparatus for administering anesthetics, the combination of achamber, acylinder or receptacle for anesthetics, a duct extend' between said cylinder or receptacle alii said chamber, a exible bag interposed between said cylinder or receptacle causing the anestheticsupplied from the cylinder or receptacle to travel substantially the length of the bagin'its passage to the chamber, and an out et from said chamber.

5. In an apparatus for administering anesthetics, thel combination of a chamber, a tubular arm projecting therefrom, said arm having a connection, a flexible bag or receptacle supported by said connection, a support orv yoke for an anesthetic cylinder on said arm, a duct extending between said cylinder and said bag, means for caus` the anesthetic sup lied to said bag to trave substantially the ength of the bag before entersup lying oxygen to said chamber,and an 4out et from said chamber. a

7. In an apparatus for administering anesthetlcs, the combination of achamber, a tubular llrm projecting therefrom and communicating therewith, said arm having a downwardl extending branch, a flexible b contosid branch, an extension o said projecting beyond the downward exteniiexxble tube communicating ar said bag, means for sion and provided with a support for an amigathetic receptacle, the latter extension having a passageway extending from said yoke or support into the downward extensionfa' sageway and extending ne to the bottom of the bag, a valve for controlling the au of anesthetic from the receptacle to the 5g and an outlet from said chamber;

with said pas-k Ply 8. In an apparatus for administering anesthetics; the combination of a mixing chamber, tubular arms projecting therefmm and communicating therewith, said arms having each a branch, a fiexible bag connected to each of said branches, an extension `reject-- ing Abeyond each of the said branc es and provided with a yoke or support, said extensions having each,a passageway extending from said yoke or support into the bagsupportinff branch,aiiex1ble tube communicating'wit 1 one of`A said passageways and eX- tending nearly to the bottom of the corresponding bag, a valve in each of said passageways, and an outlet from said chamber.

9. In an apparatus for administering anesthetics, the combination of a chamber, an arm project' therefrom and providetwith a transverse ollow arm ha a. pair of yokes or supports for tanks or cylinders, each l of said arms being. providedv with a pass' Way extending from the passageway in t e transverse arm to the mixing chamber, a valve controlling the ow of fluid from either or both tanks or cylinders on each transverse arm thro the passageway oommunicatin' therewith, and an outlet from said chamber.y

l0. In an apparatus for administeringanesthetics, the combination of a chamber, a tubular arm rojecting therefrom and communicating tierewith, said arm ha a branch intermediate the ends thereo 'a flexible bag carried by said branch, a pair of yokes or supports at the outer end of said arm, said arm having a passageway extending from each of said yokes or supports to the central portion thereof and a p extending from the junction of the ormer passagewavs to the valve at the junction of the three passageways, and an outlet from said chamber.;

l1. In an apparatus for administering anesthetics, the combination of a mixing chamber, a pair of tubular arms projting therefrom and communicating therewith, each of said arms havintermediate the bag or receptacle, a.

eway

ends thereof a branch, a exible bag carried by each of said branches, a pair of yoizes or supports at the 'outer end Aof eaph ot' said arms, each of said arms having a pgssage--Way extending from each of said yolies `or supports tothe central portion thereof and a passageway extending from the junctin of the former passageway/s to the corresponding` junction o bag or receptaclmayalve in each arm at the the three passageways, and an outlet from 'said chamber.

12.- In an apparatus Afor administering anesthetics, the combination of a mixing chamber, a. air of arms projecting therefrom, each of sai arms having adjacent its outer end a vair of yokes or supports for gas tanks and eing provided with a passagewa connecting said yokes vand a downward y inclined passageway extending from the former passageway, a connection with which each of said inclined passageways communicates, a flexible bag communicating with each of said extensions, each of said arms havingA also a passagewagextendinglbetween the connection and t c amber, a valve interd between each of said bags and the' mixing chamber, and a check valve interposed between each of the former valves and the c am ei". 13. an apparatus for administering anesthetics, the combinationof a mixing chamber, said chamber having connections for suplying thereto oxygen and a gaseous anest etic, valves .in said connections, a vaporizing rece tacle for liquid anesthetic said to the inhaler.

receptacle aving an opening therein', a turom said open'- inlglto the mixing chamber, reticulated materi 'inthe said receptacle, and a cage interposed between such material and the opening in said receptacle.`

14. In 'an apparatus for administering anesthetics, the combination of a mixing chamber, said chamber being provided with connections for the supply thereto of oxygen and a gaseous anesthetic, valves in said connec# tions, an outlet pipe leading from said chamber, an inhaler on said pipe, a receptacle for liquid anesthetic, a connection between said receptacle and said. inhaler, 'andmeans for diverting a portion of the mixed gasesfrom the mixing chamber through said receptacle, whereby saidA gases may be charged with the vapor of anesthetic in said receptacle and added to the mixture of gases being supplied 1 5. In an apparatus for administering anesthetics, the combination of a mixing chamber, said chamber havingY connections for y esthetica, the combination p supplying oxygen and an anesthetic gas thereto, valves in said connections, a recep- ,tacle for li uid anesthetic, an outlet connection exten( ing from said mixing chamber to said receptacle, and a valve in said connection.

16. In an apparatus for administering anf a mixing chamber having a vconnection for oxygen and a connection for an anesthetic gas, a valve in l each of said connections, an outlet 'connection extending from said chamber, a receptacle for liquid anesthetic communicating with said outlet connection, and a second `gutlet connection extending from said cham- 17. In an apparatus for administering anesthetics', the combination of a chamber having connections for supplying oxygen and an anesthetic gas thereto, .valves in said connections, a receptacle for liquid anesthetic, 'an outlet connection extending from said chamber to said receptacle, said connection having two branches, one f of said' branches being provided with a valve and having a connection, intermediate ofthe ends thereof, communicating with said receptacle.

' 18. In an apparatus for administering anesthetics, the combination of a mixing chamber, said chamber being provided with connections for supplying oxygen and a gaseous anesthetic thereto, valves in said connections, a receptacle for liquid anesthetic and an outlet. connection leading from the chamher thereto, said outlet lconnection being` outlet connection to pass through the latter branch and throul h the receptacle before: reaching the other ranch.

19.l In ari apparatus for administeri anesthetics, the combination of a mixingc amber having connections for supplying oxygen and gaseous anesthetic thereto, valves in said connections, an outlet connection comprisin a tee communicating with said chamber, sai tee having two dischar e ipes connected thereto, and a receptacle ibr liquid anesthetic connected to one of said pipes.

20. In an apparatus for administering anesthetics, the combination of aV mixing chamber having connections for supplying oxygen and a-gaseous anesthetic thereto, valves in said connections, a tee communicating with said mixing chamber and having a valve for the admission of air thereto and a pair of connections, discharge pipes on said connec tions, and a receptacle for liquid anesthetic communicating with one of said pipes.

Y Iii testimony whereof, I hereunto affix my signature in the presence of two witnesses.

CHARLES K. TETER.- 

